FEATURES AND BENEFITS
• Contactless 0° to 360° angle sensor IC for angular
position, rotational speed, and direction measurement
□ Capable of sensing magnet rotational speeds targeting
12-bit effective resolution with 900 G field
□ Circular vertical Hall (CVH) technology provides
a single-channel sensor system with air-gap
independence
• On-chip 32-segment linearization to improve angle accuracy
□ Reduces the impact of magnet-to-sensor misalignment
□ Reduces the impact of imperfect magnetization of
target magnet
• Developed in accordance with ISO 26262 requirements
for hardware product development for use in safetycritical applications
□ Single-die version designed to meet ASIL B
requirements when integrated and used in conjunction
with the appropriate system-level control, in the
manner prescribed in the A33002 Safety Manual
□ Dual-die version designed to meet ASIL D
requirements when integrated and used in conjunction
with the appropriate system-level control, in the
manner prescribed in the A33002 Safety Manual
• Digital output format selectable between SPI, SENT, or
PWM
• Programmable via Manchester encoding on the VCC line
(user to device) and VOUT line (device to user), reducing
external wiring
SENT output is SAE J2716 JAN2010-compliant with Allegro
proprietary enhancements
□ Customer-programmable SENT tick times ranging
from 0.5 to 7.9 µs
• On-chip EEPROM for storing factory and customer
calibration parameters
□ Integrated charge pump allows in-application programming
without any requirement for high voltages to be supplied to
the device during programming
□ Single-bit error correction, dual-bit error detection error
correction control (ECC)
• Supports operation in harsh conditions required for automotive
and industrial applications
□ Operating temperature range from –40°C to 150°C
□ Operating supply voltage range from 3.7 to 5.5 V, absolute
maximum of 28 V
• Loss of power is indicated by a reset flag
• 10 MHz SPI for low-latency angle and diagnostic data; enables
multiple independent ICs to be connected to the same bus
□ 4-bit CRC
• Multiple programming/configuration formats supported
□ The system can be completely controlled and programmed
over SPI or Manchester protocol, including EEPROM writes
□ For system with limited pins available, writing and reading
can be performed over VCC and VOUT pins.
□ 1 mm-thin, surface-mount TSSOP package to minimize air
gap from target magnet to the CVH transducer for improved
field strength
DESCRIPTION
The A33002 is a 360° angle sensor IC that provides contactless
high-resolution angular position data based on magnetic circular
vertical Hall (CVH) technology. It has a system-on-chip (SoC)
architecture that includes: a CVH front end, digital signal
processing to calculate the angular position data, and selectable
output protocols (SPI, SENT, or PWM). It also includes on-chip
EEPROM technology capable of supporting up to 100 read/
write cycles for flexible programming of calibration parameters.
The A33002 is ideal for automotive applications requiring 0°
to 360° angle measurements, such as electronic power steering
(EPS), transmission actuators, and BLDC pumps.
The A33002 includes on-chip 32-segment linearization. This
can be used to calibrate out errors due to misalignment between
the magnet and the sensor or imperfect magnetization of the
target magnet (which can present itself as a misalignment of
the magnet to the sensor).
The A33002 supports customer integration into safety-critical
applications.
The A33002 is available in a single-die or dual-die 14-pin TSSOP
package (suffix LE). The package is lead (Pb) free with 100% matte
tin leadframe plating. The 1 mm-thin package reduces the minimum
air gap between the CVH transducer and the target magnet.